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Därför kan man inte stoppa in en torium-232/uran-233 mix som bränsle i dagens reaktorer och förvänta sig att inte får något långlivat avfall.

1. av D Fredriksson · 1984 · Citerat av 1 — Torium-232 (Th). Radium-228 (Ra). Aktinium-228 (Ac). Torium-228 (Th). Radium-224 (Ra). Radon-220 (Rn).

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Thorium 232, which alone makes up nearly all natural thorium, is the most common isotope of thorium in the nature.This isotope has the longest half-life (1.4 x 10 10 years) of all isotopes with more than 83 protons. Other articles where Thorium-232 is discussed: fissile material: the fertile materials uranium-238 and thorium-232, respectively. A fertile material, not itself capable of undergoing fission with low-energy neutrons, is one that decays into fissile material after neutron absorption within a reactor. Thorium-232 and uranium-238 are the only two naturally occurring fertile materials. Thorium 232.

Nuclear fuel dissolved in the molten Fluoride salt will fission, generating heat that will take the molten salt to 7500C. When the isotope Thorium-232 is bombarded 

[1] It is considered to be "fertile", due to its ability to be converted into a fissile material from neutron absorption and later nuclear decay. Most of the natural thorium exists in isotope form as Th-232.

thorium-232 requires a source of neutrons for the transmutation to take place, from a fissile material (such as uranium-235 or plutonium 239) or from an external source such as spallation neutrons. Thorium-232 appears in nature unmixed with isotopes, does not require enrichment for use as reactor fuel, and only needs

The primary ways people are exposed are inhalation,  Thorium Isotopes. As thorium-232 undergoes radioactive decay, it emits an alpha particle, with accompanying gamma radiation, and forms radium-228. This  Describes thorium as an element and some important milestones in its history, of Earth's thorium is thorium-232, which is only slightly radioactive because of  Aug 20, 2012 Overview. Thorium-232 is the primary abundant nuclide of thorium.

November, 23rd 2010 Serena Risica, Francesco Bochicchio and Cristina Nuccetelli Istituto Superiore di Sanità (National Institute of Health) Rome, Italy For at thorium-232 skal kunne brukes i en reaktor må det omvandles til den fisjonerbare nukliden uran-233, dette gjøres ved å sette inn et ekstra nøytron i thorium-232. Da får vi thorium-233 som er ustabilt og på et par timer gjøres om til Protactiniumet-233, som vil omgjøres seg til uran- 233 i løpet av et par måneder (Omtvedt 2008).
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in 25 MeV and 50 MeV Charged Particle Induced Fission of U-238 and Th-232. Experimental Neutron-induced Fission Fragment Mass Yields of Th-232 and  Tidvattenenergi.

It decays into radium-228 through alpha decay or decays through  Thorium's most stable isotope, thorium-232, has a half-life of about 14,050,000,000 years. It decays into radium-228 through alpha decay or decays through  Thorium as a nuclear fuel. Naturally-occurring thorium, thorium-232, although radioactive, is not capable of sustaining a nuclear chain reaction; the necessary  It is demonstrated that the halflife of 232 Th can be determined by dissolving a known amount of Th(NO 3 ) 4 x4H 2 O in a liquid scintillator and using a difference  Th-232 can be used as fuel in a fast-neutron reactor, as a fertile material which converts into U-233.
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Given- The radioactive decay of Thorium-(232) is occurring. If the radioactive decay of Thorium-(232) occurs, the first product obtained is See full answer below.

It decays into radium-228 through alpha decay or decays through  Thorium's most stable isotope, thorium-232, has a half-life of about 14,050,000,000 years. It decays into radium-228 through alpha decay or decays through  Thorium as a nuclear fuel. Naturally-occurring thorium, thorium-232, although radioactive, is not capable of sustaining a nuclear chain reaction; the necessary  It is demonstrated that the halflife of 232 Th can be determined by dissolving a known amount of Th(NO 3 ) 4 x4H 2 O in a liquid scintillator and using a difference  Th-232 can be used as fuel in a fast-neutron reactor, as a fertile material which converts into U-233. Figure 1 : Thorium 232 decay chain.

Den naturligt förekommande isotopen Thorium-232 ger värdefull information, eftersom dess förekomst är starkt korrelerad till matjordens lerhalt. Även förekomsten 

turligt förekommande nukliderna thorium-232, kalium-40 och Th. (ppm).

Almost all thorium found in nature is the isotope thorium-232 (several other isotopes exist in trace amounts or can be produced synthetically). This slightly radioactive material is not fissile itself, but it can be transformed in a nuclear reactor to the fissile uranium-233. Such uranium-containing glass is often referred to as canary or vaseline glass. In part, collectors like uranium glass for the attractive glow that is produced when the glass is exposed to a black light.